Dump-car.



1.8. MARTIN.

DUMP CAR,

APPLICATION FILED JULY 21-,1934.

Patentedeph 21, 1915 4 SHEETSSHEE1 1. s. MARTIN,

DUMP CAR.

APPLICATION FILED IULY 21. I914.

INVENTOR 4 SHEETSSHEEI 2.

Patented Sept. 21(1915.

WITNESSES 3. S. MARHN.

DUMP CAR.

APPLICATION FILED JULY 21, 1914.

Rrtented Sept 21, 1915.

4 SHEETS-SHEET' 3.

\RHTN ESSES INVENTOR J. s. MARTIN.

. DUMP CAR,

APPLICATION FILED JULY 21, 1914 Patented Sept "21, 1915.

WITNESSES INVENTOR able frame.

JAMES Q. MARTIN, OF DOEIVKONT BOROUGH, PENNSYLVANIA, ASSIGNOR ONE-I-IALF TO'WILLIAM'. C. BOYD, OF MCKEES ROCKS, PENNSYLVANIA.

DUMP-OAR.

Specification of Letters Patent.

Patented Sept. 21, 11915.

Application file July 21, 1914. Serial No. 852,268.

T 0 all whom it may concern Be it know n that 1, JAMES S. MARTIN, a resident of Dorm'ont Borough, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Dump-Cars, of which the following is a specification. I

Thisinvention relates to dump cars and more particularly to that type of dump car having a side-wise tilting body.

The purpose of the invention is to pro-' 'vide a dump car of the class named whereby greater lateral movement of the car body is obtained than by such cars as heretofore constructed, so that the load can be thrown farther from the track and prevented from falling back on to the track when dumping on level ground; which is easy to operate by an arrangement such that the center of gravity of the loaded body moves in a downward direction while dumping, while the center of gravity of the empty body also moves in a downward direction when righting the car body after dumping; which is of a lower construction than similar cars as heretofore constructed, thereby not only saving in cost of loading but making the car more stable and less likely to overturn when running; and which is adaptable to different conditions by variations in the construction.

The invention comprises a dump car of the character specified constructed and arranged as hereinafter described and claimed.

In the accompanying drawings Figure 1 is a vertical transverse section through the car showing the body in upright position; Fig. 2 is a similar View showing the body tilted for dumping; Fig. 3 isa side elevation of the car; Fig. at is a vertical central longitudinal section through the car; Fig. 5 is a vertical transverse sectional view of the car; Fig. 6 is a sectional detail view of the locking means for the doors or car sides; Fig. 7 is a detail view showing a modificationof the door locking means; and Figs. 8 and 9 are views similar to Figs. 1 and 2 but showing a modified form of body-and doors or sides.

The car comprises a tilting body 1 which is mounted for sidewise tilting upon a suit- The frame illustrated 'comprises suit ble longitudinal members .2 shown as beams located at or near the sides 0f the car which are joined by suitable arranged to engage the links 21' or transverse members, of which the drawings illustrate a suitable body bolster '3, end sill & and one or more additional transoms or beams 5. At or near the ends of this underframe are suitable transverse upright frames from which the car body is supported, these frames comprising vertical web plates 7 connected to the underframe by angle members 8 and having angle members 9 extending along their upper edges, and stiffened by vertical angle members 10. A channel beam 11 is supported by suitable bracket members 12 near the top edge of each cross frame and is spaced slightly inwardly therefrom. Thgse upright frames are braced by suitable members 13 connecting the upright frames near their tops with the underframe. Various other constructions of supporting frames will readily suggest themselves.

The body comprises a suitable bottom 14 and ends 15, which may be constructed in any suitable way, the drawings showing the same formed of plate metal with the bottom plates strengthened by the side bars 16 which are shown as 2 bars, and center stringers 17 which are shown as I beams, while the ends 15 are connected to the bottom by angle bars 18 and are stiffened at their upper edges by similar bars 19. The sides 20 of the body are formed as swinging doors, arranged when the body tilts to swing out of normal position and dump the contents. As shown in Figs. 1 to 1 these doors swing downwardly, being supported by a pair of links 21 and 22 at each end of the door, which links at one end are pivoted respectively near the upper and lower edges of the door, and at their opposite ends are pivotally connected to the ends of the car body, these links being so arranged that when the doors open they swing outwardly and downwardly and take a position substantially underneath the bottom of the body out of the way of the discharging load, as shown in Fig. 2. Suitable spring pressed latches 23 are pivotally mounted on the ends of the car body and have hooked ends 28 thedoors and lock them in closed position. These latches have their tails 25 so formed and arranged that when the body tilts said tails contact with posts or similar obstructions 26 on the end frames, to disengage said latch s from the door permit the latter 3 Tie body is supported from tic 'the upright plates 7 and the channel beams 11, while their lower ends are pivotally connected by means of pins 31 and 32 respec tively, to brackets or frames 33, secured to the car body, and in the form shown in Figs. 1 to 4, depending a considerable distance downwardly from said car body. These bracket frames may be constructed in any suitable way. As shown they comprise web plates 34: having their edges strengthened by angle bars 35, and being braced by brace members 36 extending from'near the lower edges of the depending brackets to the stringers 17 of the car body. Any other suitable construction of bracket maybe employed.

The links 27 and 28 are shown with their upper ends "spaced farther apart than their lower ends, so that when the car body is moved sidewise the lower pivotal end of one link moves in an upwardly extending are, shown at 37, while the lower pivotal end of the other link moves in a downwardly extending arc, as shown at 38, as a consequence of which the car body is tilted, shown in Fig. 2. It will be further observed that when moving from the position shown in Fig; 1 to that shown in Fig. 2 the link 28 has swung toward the right to the farthest extent when the pivotal point 31 lies in the line 39 connecting the pivotal points 29 and 32, and that the further sidewise movement of the car body causes the pivotal point 32 to swing backwardly, that is, toward the center of the car, while the pivotal point 31 continuesits upward swing. This link arrangement is such that when the car body tilts it. swings decidedly toward one side, and consequently the load is deposited some distance beyond the track, so that it does not flow back onto the track as readily as with present types of side dumping cars. The arrangement shown is such that as it swings to tilting position the center of gravity-of the loaded body lowers, while in the final tilted position the center of gravity of the empty body is somewhat higher than when the empty body is in righted position,

so that in righting the car body its center of gravity is again lowered. As a consequence, the movement of the car body to tilt and to right is efiected with the expenditure of a minimum amount of power.

By varying the lengths of the links 27 and 28, or varying the distances between the upper and lower ends respectively of the pair of links at each end of the car, the body can be tilted to any desired angle, depending upon the characterof material to be handled,--s0 as to insure the discharge of the material from the tilted body. The lower pressed air power, or the like.

ends of the links may be connected directly to the car body, or to a downward depending bracket, or even to .an upward projecting bracket, depending upon, the character of car body and the length and arrangement of the supporting links.

The car body can be moved by any suitable mechanism, either hand power, or com- The drawings show one simple arrangement for this purpose, this comprising a crank shaft 40 mounted in a bracket '12 extending from the top of one end of the car'body and carrying a pinion 48 which engages a rack 44: secured to the top of the upright cross frame, and which rack is of such shape or contour that the pinion engages the rack during the entire swinging movement of the car body.

The opening movement of the doors '20 is controlled by means of vertical cam tracks or guides 45 secured to the frame of the car at each of the vertical upright frames, and which are engaged by rollers 46 journaled on the lower edges of the doors at each end. l/Vhen the car body is righted these rollers also engage with said guides and the latter are so shaped that they swing the doors to closed position, whereupon they are automatically locked by the latches 23. 'In closed position of the doors the rollers 46 rest on the upper edges of the cams 15, which therefore assist in supporting and holding the doors in closed position. In the case of long car bodies it may be necessary to also support the body between its ends. This is accomplished by providing the car body intermediate its ends with depending brackets 18 having at their lower ends rollers 49 which run on guides or tracks 50 on a transverse transom 51 of the car frame. In the case of short cars this intermediate support is not necessary. I

Fig. 7 shows a modification of the looking means for the car side or door. In this modification the latch 28 engages a pin 2 1 on the link 21,- and said latch is provided with a roller 26 bearing on the top of the transverse upright frame so that as the car body moves outwardly this roller and the latch are lifted sufficiently to disengage the hook of the latch from the pin 24 to release or unlock the car side.

Figs. 8 and 9 show the car body somewhat deeper than shown in Figs. 1 and 2, and with the depending brackets 33 of less depth than in Figs. 1 and 2. They also show the sides or doors 20 arranged to swing upwardly, instead of downwardly. As here shown the position of the links is reversed fromthose shown in Figs. 1 and 2, namely, the link 21 connects to the upper edge of the car side while the link 21 connects to the lower edge of said car side. This side is actuated by means of a lever 53 fulcrumed at 54: on the end 15 of the car body and having its upper end connected by the link 55 to the link 21 and its lower connected by slotted link 56 to of the supporting links 27 or On the side vhich is lowered, (to Wit, the ght side, 9} these links and pivoted lever act to swing the car side or door 520 \vardly end ontwarC at its lower edge, ile on the opposite side of the car the slot in link provides su'iiicient lost motion so that the door or side 20 on that side or the cor remains in closed position. in order the car sides or'doors shall clear the body when swinging it is necessary that the pivotal point of ettachin the link 2201 522*, namely the 58, l e slightly below the F s. and 2) the lower edge 1 i y above (in the case upper edge or" rs 20 When opening moving in one are move in an opporeadilyapp Figs. 1 2 d- Various 0th g the sWin provided w ntion.

L described does the invention l es of car construction compared with previous cars'of oe {i} that the body has a movement so'as to throw the xo farther he tracl: (2 the ease of operation he that the parts are so arranged it the center of gravityof the loadedboc es in downward direction 1e center of gravity ody al 0 moves in a down hen 1 i ting; (8) a lowe a Wh le as to save cost or the car more stable to overturn when running" loading, or and less i1 rely rough a and (4t) the adaptability one design to :nn erent conditions because the principle of construction allows a large nber of variations in order to roost difconditions of 'nse.

has claim is A dump oer, comprising" a frame, and side diiinping body mounted in said frame in such manner that when moving to dumpposition a -point on one side of the longiardly extending are around a center on e some side 0; the body and a point on the side of the longitudinal center of oves in an independent and downnd a correspond s body the sides body,

inel center of said body moves in an upthe can be downweroly unde the coody as a o car, a side dumping; body, movable sir Us for said body, and links connecting points near the t n and bottom. edges of said sides soic booy so or ran ed that l a the ten and he om edges oi said sides respectively in i independent arcs around centers on the ends of the oer body, e on said center being on the some side longitudinal center of the car l are described aronndsziid center ending outwardly ii-om the cor and tile other are extending inwardly the car side. 7

on a dnmocer e side dumping body, more le sides for said body means for connectino said sides to said body so that 4 top and bottom edges oi said sides respec y move in independent arcs the upper-en the side moving outwardly and doWni ardly, the'lovver edge of the one arc ei from side moving inwardly whereby the side a side dumping oo y,

eellyconnected to the car body,

links at each end of said side, one of said links having one end pivotally connected near the lower edge of the car side, and the end of the other link being pivotally connected near the upper edge of said side, the opposite ends of said links being pivotally connected to the car body at points lying in different horizontal and vertical planes and the car end of the first named link lying below the car end of the second named link, whereby when the side is swung its opposite edges move in independent arcs and the side moves under. the car body.

8. In a dump car, a side dumping body, movable sides therefor, links connecting said sides to the car body so arranged as to peropening and closing movements and to also support said sides in closed position thereof.

9. A dump car, comprising a frame, a side dumping body, and apair of links at each end of said body, each link at one end being pivotally connected to a point on one side of the body and at its opposite end being pivotally connected to a point on the same side of the frame at an elevation above the bottom of the car body when in normal position, said links being so arranged that when the car body is swung thereon one side moves downwardly and the other side moves upwardly.

In testimony whereof, I have hereunto set my hand.

JAMES S. MARTIN.

Witnesses:

WILLIAM B. VVHARTQN, GLENN H. LERESCHE. 

